Variable reflection effect driving mirror - has adjustable filter in front of mirror, with photocells to adjust transmission and set relative intensity of reflected light

摘要

The interior driving mirror is covered with a variable transmission plate (2) linked to a control circuit. A photo-detector (7) behind the plate adjusts the transmission so that the reflected light does not dazzle the driver. A second photocell (14) outside the mirror sets the relative intensity of the reflected light w.r.t. the ambient illuminations and is not dazzled by following headlights.